{"product_id":"zurn-wilkins-rk4-375ck1-1-check-assembly-repair-kit-for-375475-series","title":"Wilkins RK4-375CK1 | #1 Check Assembly Repair Kit for 375\/475 Series","description":"\u003cp\u003e\nThe Wilkins RK4-375CK1 is a comprehensive #1 check assembly repair kit designed to restore first check valve sealing and operation in backflow preventers without requiring full unit replacement.\n\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eKey Specifications:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eSize Compatibility:\u003c\/strong\u003e\n    2 1\/2 to 4 Inches\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eCompatible Models:\u003c\/strong\u003e\n    375A, 375ADA, 375, 375DA, 475, 475DA\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eFunction:\u003c\/strong\u003e\n    Restores first check valve sealing\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eWarranty:\u003c\/strong\u003e\n    1-year limited warranty\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eKit Components:\u003c\/strong\u003e\n    Complete assembly with seals and lubricant\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eOther Related Variants:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eRK4-375CK2:\u003c\/strong\u003e\n    #2 Check Assembly Repair Kit\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eMaterials:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSeat assembly components\u003c\/li\u003e\n  \u003cli\u003eO-ring seals\u003c\/li\u003e\n  \u003cli\u003eMetal poppet assembly\u003c\/li\u003e\n  \u003cli\u003eSeal rings\u003c\/li\u003e\n  \u003cli\u003eWashers\u003c\/li\u003e\n  \u003cli\u003eBolts and retainers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTypical Installation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"background: #f8f9fb; padding: 12px 14px; margin: 0; line-height: 1.7; color: #333;\"\u003e\nDesigned for repair and maintenance applications in commercial, industrial, and institutional facilities where backflow prevention is required. The Zurn RK4-375CK1 is suitable for potable water systems requiring periodic maintenance of the first check assembly in double check valve assemblies and reduced pressure zone assemblies.\n\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eStandards Compliance:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"background: #f8f9fb; border-left: 4px solid #1d85af; padding: 12px 14px; margin: 0; line-height: 1.7; color: #333;\"\u003e\nASSE 1015; USC FCCCHR; IAPMO; CSA\n\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eFeatures \u0026amp; Benefits:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCost-Effective Repair:\u003c\/strong\u003e Allows repair without replacing entire backflow preventer assembly, reducing maintenance costs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes all necessary components including check assembly, seals, O-rings, poppet, retainers, bolts, washers, and lubricant for comprehensive repair.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Fits multiple Zurn RK4-375CK1 backflow preventer models including 2 1\/2 inch and 3 inch Models 375A and 375ADA, and 4 inch Models 375, 375DA, 475, and 475DA.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRestores Performance:\u003c\/strong\u003e Effectively restores first check valve sealing and operation to original specifications, ensuring continued backflow protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Which backflow preventer models are compatible with this repair kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This kit fits 2 1\/2 inch and 3 inch Models 375A and 375ADA, as well as 4 inch Models 375, 375DA, 475, and 475DA backflow preventers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What components are included in the repair kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The kit includes the #1 check assembly, seat retainer, seat assembly #1 poppet, poppet retainer, poppet bolt, seal ring, seat O-ring, poppet bolt O-ring, washer, and lubricant.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I repair my backflow preventer instead of replacing the entire unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, this repair kit allows you to restore the first check valve sealing and operation without replacing the entire backflow preventer, providing a cost-effective maintenance solution.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cdiv id=\"W3TucRPBpqQA9ARvwg6ni-content\"\u003e\n  \u003cp\u003e\n    \u003cspan\u003e\n      \u003cstrong\u003eNOTICE:\u003c\/strong\u003e\n      Do not use with water that is unsafe or of unknown quality without adequate\n      disinfection either before or after the system.\n    \u003c\/span\u003e\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e\n  \u003ci\u003e\n    \"Hydrate Everyone, Everywhere!\" BottleFillingStations.com |\n    \u003ca rel=\"noopener\" href=\"https:\/\/bottlefillingstations.com\/pages\/contact-us\" target=\"_blank\"\u003e\n      Contact us\n    \u003c\/a\u003e\n  \u003c\/i\u003e\n\u003c\/p\u003e","brand":"Zurn Wilkins","offers":[{"title":"Default Title","offer_id":42934992175167,"sku":"RK4-375CK1","price":545.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/0985\/files\/RK4-375CK1_AF_1083cd3f-385f-4f34-9a96-455faab2d02e.jpg?v=1771502170","url":"https:\/\/bottlefillingstations.com\/products\/zurn-wilkins-rk4-375ck1-1-check-assembly-repair-kit-for-375475-series","provider":"BottleFillingStations.com","version":"1.0","type":"link"}